The Forbidden Cities are what the Elves call human territory. All of the world we know is part of the Forbidden Cities.

Forbidden Cities Visited in The Keeper of the Lost Cities Edit

San Diego, California

- Visited by Sophie (the whole Foster family lived there), Keefe, Mr. Forkle, and Sandor.

Paris, France

- Visited by Sophie and Dex

Mt. Everest

- Visited by Sophie, Dex, Keefe, Fitz, Biana, Lady Gisela, Sandor, and Mr. Forkle

Florence, Italy

-Visited by Sophie, Fitz, Keefe, Dex, Biana, Della, Mr. Forkle, possibly other members of the Black Swan, and at least one Pyrokinetic in the Neverseen, so possibly Brant or Fintan.